Home / 1,647.79-2,273.88-985.01

Finding the Fourth Proportional to 1,647.79, 2,273.88 and 985.01

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Solution

The fourth proportional to 1,647.79, 2,273.88 and 985.01 is: 1,359.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.79 : 2,273.88 = 985.01 : x
  2. Step 2: Convert to fraction form
    1,647.79/2,273.88 = 985.01/x
  3. Step 3: Cross multiply
    1,647.79x = 2,273.88 × 985.01
  4. Step 4: Simplify right side
    1,647.79x = 2,239,780.71
  5. Step 5: Solve for x
    x = 2,239,780.71/1,647.79
  6. Step 6: Final answer
    x = 1,359.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.